Hearts of Steel 
After the destruction of Dr. Robotnik in the explosion of the Doomsday Project, the robot known as Mecha-Sonic is freed from Robotnik's tyranny. Finding himself lost and alone in a world that hates and fears him, he finally thinks he has found his place with the Freedom Fighters. But when a terrible misunderstanding causes the Freedom Fighters to banish him, he must prove to them that he really has changed... but will it take a tragedy for them to see the truth?